fix: use get_speculate to the number of layers (#1737)

server/text_generation_server/utils/layers.py

@@ -8,7 +8,8 @@ from typing import List, Tuple, Optional
 from loguru import logger
 from functools import lru_cache
 
-# Dummy comment.
+from text_generation_server.utils.speculate import get_speculate
+
 HAS_BITS_AND_BYTES = True
 try:
     import bitsandbytes as bnb
@@ -445,7 +446,7 @@ class MedusaModel(torch.nn.Module):
         self.heads = torch.nn.ModuleList(
             [
                 MedusaHead(config, medusa_config, prefix=f"{i}", weights=weights)
-                for i in range(medusa_config["medusa_num_heads"])
+                for i in range(get_speculate())
             ]
         )
 
@@ -542,7 +543,7 @@ class MedusaHeadV2(nn.Module):
                     )
                 routing[k] = filename
 
-        self.n_medusa_heads = medusa_config["medusa_num_heads"]
+        self.n_medusa_heads = get_speculate()
 
         assert medusa_config["medusa_num_layers"] == 1
         self.linear = TensorParallelColumnLinear.load_multi(